MATHEMATICS HIGH SCHOOL

What is 62/78 x 1 6/8

Answers

Answer 1
Answer:

62/78*( 1 6/8)

= 31/39*( 1 6/8)

= 31/29*( 1 3/4 )

= 31/39* 7/4
Multiply the numerator together and the denominator together

= 217/156


I hope that's help ! Any questions ? Let me know

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Divide 56 in a ratio of 5:3

Answers

There are 5 "parts" and 3 "parts"; which total "8 parts" (5 + 3 = 8); so, each part must be 56/8 = 7. so each part must be 56/7 = 8 
5 x 7 is 35
3 x 7 is 21 
___________
So the answer is 35:21 .

Which expressions have a value of 18? Choose all answers that are correct. A. –3 – 21 B. 7 – (–25) C. 34 – 16 D. –4 – (–22)

Answers

A) -3 - 21 = -24
B) 7 - (-25) = 32
C) 34 - 16 = 18
D) -4 - (-22) = 18

Answer: C and D
C. 34 - 16 = 18
and
D. -4 - (-22)
    -4 + 22 = 18

Stephan is planning a hiking trip at Kings Canyon National Park. He plans to hike 14 miles every 2 days. If he hikes 42 miles, how many days will he hike?

Answers

Well for THIS one you'd have to find how many miles he hikes in ONE day, so you would divide 14 by 2 to get 7 miles per day, and to find how many days he hiked in 42 miles, just divide 42 divided by 7 which equals 6, so it took him 6 days to hike 42 miles. =)
I hope I helped! =D

Write a possible recursive rule and then find a7 for { 7,12,17,22,27}

Answers

Start from 7, then add 5 each time.

a7 is 7 plus 30, or 37.

Find the ordered pair (j,k) that satisfies the equations 5j-42k=1 and 2k-j=3

Answers

Answer:

Step-by-step explanation:

To find the ordered pair (j, k) that satisfies the given equations, we can solve the system of equations simultaneously.

The equations are:

5j - 42k = 1

2k - j = 3

We can solve this system of equations using various methods, such as substitution or elimination. Here, we'll use the method of substitution:

From equation 2, we can express j in terms of k:

2k - j = 3

j = 2k - 3

Now, substitute this value of j into equation 1:

5j - 42k = 1

5(2k - 3) - 42k = 1

10k - 15 - 42k = 1

-32k - 15 = 1

-32k = 16

k = -0.5

Substitute this value of k back into equation 2 to find j:

2k - j = 3

2(-0.5) - j = 3

-1 - j = 3

j = -4

Therefore, the ordered pair (j, k) that satisfies the equations 5j - 42k = 1 and 2k - j = 3 is (-4, -0.5).

Round 125,458 to the nearest hundred thousand

Answers

To solve this you need to look at the number to the right of the hundred thousand place. So that would be "2" The rule is if that number is less than 5 round down, more than 5 round up.

So 125,458 = 100,000 to the nearest hundred thousand
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